40782644 has 48 divisors (see below), whose sum is σ = 83865600. Its totient is φ = 16994016.

The previous prime is 40782601. The next prime is 40782647. The reversal of 40782644 is 44628704.

40782644 = T₂₈₇ + T₂₈₈ + ... + T₆₄₄.

40782644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40782647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227747 + ... + 227925.

It is an arithmetic number, because the mean of its divisors is an integer number (1747200).

Almost surely, 2^40782644 is an apocalyptic number.

It is an amenable number.

40782644 is an abundant number, since it is smaller than the sum of its proper divisors (43082956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40782644 is a wasteful number, since it uses less digits than its factorization.

40782644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 40782644 is about 6386.1290309545. The cubic root of 40782644 is about 344.2113020362.

The spelling of 40782644 in words is "forty million, seven hundred eighty-two thousand, six hundred forty-four".